docs: def by_zipcode(self,
                     zipcode,
                     zipcode_type=None,
                     zero_padding=True):
          """
          Search zipcode by exact 5 digits zipcode. No zero padding is needed.
  
          :param zipcode: int or str, the zipcode will be automatically
              zero padding to 5 digits.
          :param zipcode_type: str or :class`~uszipcode.model.ZipcodeType` attribute.
              by default, it returns any zipcode type.
          :param zero_padding: bool, toggle on and off automatic zero padding.
          """
          if zero_padding:
              zipcode = str(zipcode).zfill(5)
          else:  # pragma: no cover
              zipcode = str(zipcode)
  
          res = self.query(
              zipcode=zipcode,
              sort_by=None,
              returns=1,
              zipcode_type=zipcode_type,
          )
          if len(res):
              return res[0]
          else:
              return self.zip_klass()